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2 years ago

Predict which substance has greater molar entropy. Explain.(b) HNO₃(aq) or HNO₃(l)

1 answer:

7 0

HNO3 (aq) is having greater entropy than HNO3 (l) because Due to more disorder and a wider range of potential configurations, aqueous liquids have a higher entropy than solids. The general order of entropy rise is as follows: solids, liquids, aqueous solutions, and gases.

The well-known "products minus reactants" approach, which multiplies the absolute entropies of each reactant and product by their stoichiometric coefficients in the balanced chemical equation, is used to compute S° for a chemical reaction from standard molar entropies. Entropy is a gauge of disorder, hence substances having greater molar values might be thought of as being more disorganized. The substance's condition has the most impact on the molar entropy.

Learn more about entropy here-

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How many grams of H2 can be formed from 54.6 grams of NH3 in the following reaction? 2NH3 (g) --> 3H2 (g) + N2 (g)

Strike441 [17]

Answer:

9.64g

Explanation:

The balanced equation for the reaction is given below:

2NH3 (g) —> 3H2 (g) + N2 (g)

Next, we need to calculate the mass NH3 that decomposed and the mass of H2 produced from the balanced equation. This is illustrated below:

Molar Mass of NH3 = 14 + (3x1) = 14 + 3 = 17g/mol

Mass of NH3 that decomposed from the balanced equation = 2 x 17 = 34g

Molar Mass of H2 = 2x1 = 2g/mol

Mass of H2 produced from the balanced equation = 3 x 2 = 6g.

Now, we can obtain the mass of H2 formed from 54.6g of NH3 as follow:

From the balanced equation above,

34g of NH3 decomposed to produce 6g of H2.

Therefore, 54.6g of NH3 will decompose to produce = (54.6x6)/34 = 9.64g of H2

Therefore, 9.64g of H2 can be obtained from 54.6g of NH3.

3 0

3 years ago

IF the strong nuclear force affects all particles that are close to each other, What will happen if we add two neutrons to our n

Alina [70]

Answer: it will increase the strong nuclear force in the nucleus

Explanation: Labster

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3 years ago

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Air is made up mostly of O2, N2, and CO2. If the total pressure of air is 765mmHg and P(N2) = 0.79 atm and P(CO2) = 0.05 atm, th

Mrac [35]

Answer:

the partial pressure of the O2 is 0.167 atm

Explanation:

The computation of the partial pressure of the O2 is shown below:

As we know that

P = P_N2 + P_O2 + P_CO2

P_O2 = P - P_N2 - P_CO2

= (1.007 - 0.79 - 0.05)

= 0.167 atm

Hence, the partial pressure of the O2 is 0.167 atm

we simply applied the above formula

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3 years ago

Which of the following correctly describes an Arrhenius acid?

PSYCHO15rus [73]

Answer:

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3 years ago

give a detailed explanation of how you can use the laboratory technique of titration to determine the concentration of a sodium

rewona [7]

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7 0

4 years ago

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